<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <ul>
      <li id="a">1</li>
      <li>2</li>
      <li class="test">3</li>
      <li>4</li>
      <li>5</li>
    </ul>
    <script src="./miniQuery.js"></script>

    <script>
      $('.test').css('background-color', 'red').css('font-size', '30px')
    </script>
  </body>
</html>
